Raman spectroscopy of Langmuir monolayers at the air-water interface

James R. Chamberlain, Jeanne E Pemberton

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

A new approach for the acquisition of Raman spectra of Langmuir layers at the air-water interface is presented. Colloidal Ag is grown electrochemically under layers of the anionic surfactants stearic acid and dipalmitoylphosphatidic acid sodium salt (DPPA) on an aqueous AgNO3 subphase. The Ag colloid layer supports surface-enhanced Raman scattering (SERS) of the Langmuir layers with minimal interference from the subphase. Spectra of good signal-to-noise ratio have been acquired. These spectra are interpreted in terms of the headgroup chemistry and the degree of alkane chain order as a function of surface pressure.

Original languageEnglish (US)
Pages (from-to)3074-3079
Number of pages6
JournalLangmuir
Volume13
Issue number12
StatePublished - Jun 11 1997

Fingerprint

monomolecular films
Raman spectroscopy
Raman scattering
Monolayers
Alkanes
Stearic acid
Water
Anionic surfactants
air
Colloids
Air
Paraffins
water
Signal to noise ratio
Sodium
Raman spectra
Salts
acids
Acids
alkanes

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

Raman spectroscopy of Langmuir monolayers at the air-water interface. / Chamberlain, James R.; Pemberton, Jeanne E.

In: Langmuir, Vol. 13, No. 12, 11.06.1997, p. 3074-3079.

Research output: Contribution to journalArticle

Chamberlain, James R. ; Pemberton, Jeanne E. / Raman spectroscopy of Langmuir monolayers at the air-water interface. In: Langmuir. 1997 ; Vol. 13, No. 12. pp. 3074-3079.
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